Question

In order for the human population to achieve zero population growth, which of the following must occur?

• A. There must be more post reproductive individuals than reproductive individuals
• B. There must be more prereproductive than reproductive individuals
• C. There must be the same number or fewer prereproductive individuals as there are reproductive individuals
• D. All of the above

Answer 1

Answer: (C)

Zero population is the condition where the birth rate and the death rate are equal. The population in this stage is stabilized. To achieve such condition the pre-reproductive individuals count must either equal or less than the reproductive individuals. If the post reproductive members are more than reproductive it is a declining population having death rate higher than birth rate.
If the reproductive members are fewer than pre-reproductive members, the population will not be rising as again death rate is higher than birth rate.